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Circular Motion

Circular Motion. Centripetal Force and Centripetal Acceleration. Velocity = distance / time. Speed = distance / time = 2(3.14)(10.6)/17.3s = 0.0085 m/s. Speed = distance / time = 2(3.14)(0.3095)/.285s = 6.82 m/s. Gas pedal, brake pedal, and steering wheel. A. v. a. v. Gravity. Tension.

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Circular Motion

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  1. Circular Motion Centripetal Force and Centripetal Acceleration

  2. Velocity = distance / time

  3. Speed = distance / time = 2(3.14)(10.6)/17.3s = 0.0085 m/s Speed = distance / time = 2(3.14)(0.3095)/.285s = 6.82 m/s

  4. Gas pedal, brake pedal, and steering wheel

  5. A v a v

  6. Gravity Tension Normal Gravity Friction Friction + Normal Friction Gravity + Normal Normal - Gravity Normal

  7. Fgrav Fnorm Fnorm Fgrav Fnet = Fnorm - Fgrav Fnet = Fnorm + Fgrav

  8. Up Down > < Bottom The seat pushes upward on you more than you are use to!!! FALSE

  9. Centripetal Acceleration

  10. 110 N 20N 2.5 N 20N 11.25 down 22.5 down 45 UP UP a = v2/R Fnet = ma 90 a = 32/0.8 Fnet = 2x11.25 a = v2/R Fnet = ma a = 32/0.8 Fnet = 3x11.25

  11. 19,400 N 5,000 N 3,000 N 5,000 N 16 down 28.8 UP 8,000 down UP 14,400 a = v2/R Fnet = ma a = v2/R Fnet = ma a = 242/20 Fnet = 500x28.8 a = 82/4 Fnet = 500x16

  12. 655 N 24,600 N 6,000 N 6,000 N 8.9 down 31 UP down 5,345 UP 18,600 a = v2/R a = v2/R Fnet = ma Fnet = ma a = 302/29 Fnet = 600 x 31 a = 142/22 Fnet = 600 x 8.9

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